Typical Characteristics of Vulnerability for the Safety Controller used in NPP

In this paper, the elements of vulnerability, the general design features and environments, and the characteristics of vulnerability for the safety controller in NPP are described. We analyzed and established the typical characteristics of vulnerability for the safety controller in NPP through extracting the detail elements of vulnerability, analyzing design features and application environments of the safety controller. Authentication process, and the monitoring of intrusion are to be carefully checked and confirmed during the cyber evaluation of the safety controller. The analysis method of vulnerability and evaluated results for the safety controller would be used in implementing of cyber evaluation of the safety controller.